From the letter Q, abbreviation of - en quando (“when”), marked on actor's play copy where they were to begin.

Noun

An action or event that is a signal for somebody to do something.

* {{quote-news

|year=2011
|date=November 3
|author=Chris Bevan
|title=Rubin Kazan 1 - 0 Tottenham
|work=BBC Sport
|url=
|page=
|passage=This time Cudicini was left helpless when Natcho stepped up to expertly curl the ball into the top corner.That was the cue for further pressure from the Russian side and it took further Cudicini saves to keep the score down.}}

The last words of a play actor's speech, serving as an intimation for the next actor to speak; any word or words which serve to remind an actor to speak or to do something; a catchword.

|year=2012
|date=May 27
|author=Nathan Rabin
|title=TV: Review: THE SIMPSONS (CLASSIC): “New Kid On The Block” (season 4, episode 8; originally aired 11/12/1992)
|work=The Onion AV Club
|url=
|page=
|passage=The episode also opens with an inspired bit of business for Homer, who blithely refuses to acquiesce to an elderly neighbor’s utterly reasonable request that he help make the process of selling her house easier by wearing pants when he gallivants about in front of windows, throw out his impressive collection of rotting Jack-O-Lanterns from previous Halloweens and take out his garbage, as it’s attracting wildlife (cue moose and Northern Exposure theme song).}}